一、实验背景

nexus安装教程：
https://www.jianshu.com/p/b25496ecc521

nexus服务的运行用户是nexus，用nexus登录操作系统，只能查看服务状态，无法执行启停服务命令

$ systemctl status nexus 

$  systemctl stop nexus 

$ systemctl start nexus 

二、添加权限，使得nexus用户不用root密码执行nexus服务的启停

# vim /etc/sudoers

nexus ALL=(ALL) NOPASSWD: /bin/systemctl stop nexus, /bin/systemctl start nexus, /bin/systemctl status nexus

$ sudo /bin/systemctl stop nexus

$ sudo /bin/systemctl start nexus

 三、参考

sudo (简体中文) wiki

https://wiki.archlinux.org/index.php/Sudo_(%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87)

https://segmentfault.com/a/1190000007394449

https://www.ibm.com/developerworks/cn/linux/l-cn-rootadmin2/index.html

How do I edit /etc/sudoers from a script?

https://jin-yang.github.io/post/linux-systemd.html

https://stackoverflow.com/questions/323957/how-do-i-edit-etc-sudoers-from-a-script